i always make my requests when i book.
since you didn't, you can call and have those requests listed on your file.
if you don't, you can always request certain rooms and towers when you check in.
rooms are usually assigned 3 to 4 days out from arrival.
if you want a particular room number and it is not available for your date, you can tell at check in that you are willing to move rooms during your stay.
sometimes these "hot" rooms are already occupied when you check in but will be open sometime during your stay.
rph has 3 towers.
one closest to the walk way path, the other closest to the water taxi.
we are taking about a mere 2 minute difference of those things.
tower 2 is back more from the park and does not have many park views.